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Product Description:

Men's NEWTON® RUNNING SIR ISAAC :: Move in a more natural direction with the men's Newton® Running Sir Isaac's unique beveled heel and toe design. Ideal for all running levels, this design helps to transition from a heavy heel strike to hitting in a more comfortable, midfoot landing position. Stay cool no matter how hard you're working with more breathable mesh. Improve your overall run efficiency and reduce risk of overuse injuries (like Achilles tendonitis and plantar fasciitis). 10.9 ounces

Category Type:

NEUTRAL[?]
If you have high arches and need minimal support, Neutral shoes are right for you.
Your feet will guide themselves more naturally through each step for your perfect running gait.
When choosing running shoes, find your perfect fit using this chart. Category types are based on factors like arch height, running habits and body frame.

This is my 3rd pair of Newtons in a year and I love them. For over 30 years I have been an Asics runner, but have had issues with my arch and heel for over a year. Once I got my Newtons, all my injuries went away. It takes a few short runs until you become used to the feel of the Newtons, but once you do, you won't go back to another shoe. So stoked to be able to do mileage again. My only issue is that the heel wears very quickly and they are pricey.

I am a Heavy weight triathlete and coach suggested Newtons for zero drop running style I am using now. These shoes will help make a difference in reducing fatigue and impact soreness.very happy with this product.Thanks to RR for the great service

Now on my 4th pair of Sir Isaacs. Started running in 2010 and first pair of shoes were the Brooks Beast. Ran a half marathon and had severe knee pain. My sister is a podiatrist and recommended Newtons to me. Have run one more half marathon and one full in Newtons and train about 20-25 miles a week in all outside running. Not one issue since switching to Newtons. Will be 50 later this year and being injury free is rare for my age group.

I love the high quality and looks of this shoe. It's my first pair of Newtons and I'm glad I finally pulled the trigger and bought them. I started to mid-foot strike about 2 years ago and purchased these to help keep me from falling back into the heel-striker runner. The lugs in the front really do keep you honest about landing on your mid-to-forefoot. The only thing I don't like is that the shoe didn't accommodate my orthotics like New Balance Brooks and Saucony. So I did send it back and sized up another half size. It works for me now and I'm happy with the fit. I run with these about 25 miles per week on roads, treadmills and easy trails and they're working good after one month.

I have been running my whole life and worn many running shoes. as a result, I suffer from runner's knee until I started using the Newtons. The shoe forces me to run properly and aleviates my knee pain. In fact, my knee pain is all but gone and i have only been running in the Newtons for the past few weeks. I am sticking with these.

Thje Isaacs are my training shoes. Run between 18-20 miles weekly as a 70.3 triathlete. They are not as light as my Distance (my event shoes!) but they are a great shoe to train on. Nice cushion on the fore foot! If you are new to Newton tech, it might take you a few miles to get used to them and the unique design. Great shoe in general! Before Newtons, i ran other brand and develop runners knee, ankle issue and NASTY shin splints... Once I adopted the newtons and their new running technique... All the issues went away! Get a pair and try them... You got 90 days to give'em back if you can't get the hang of them!

This is great training shoe. Its especially good for anyone looking to try to move to more natural running mechanics (i.e. more of a natural barefoot type foot strike). It has a similar heel to toe drop as a minimal shoe, but it retains a lot more cushion in the midsole. This makes it a great transition shoe for those interested in moving to a more minimal shoe or barefoot running.

Prior to purchasing the Newton Sir Isaac, I was wearing a new version of another brand's top of the line cushioned neutral shoe recommended to me because of my size (over 250 lbs) and my experience as a new runner (only started running in 2011). I didn't have a problem with their previous version but this one gave me a blister because of a new stitching pattern inside the shoe by the heel. At the time I had 5 more weeks of training before I would run my first marathon, the 2012 Chicago Marathon. I knew I needed a pair of shoes that I had to get used to in time for the race. I had been working on my running form all summer moving to a more midfoot strike from a heel strike. My training coach told me that she swears by Newtons, so I gave it shot. I typically wear a 2E width but RRS didn't have the wide version, so I ended up getting a .5 size larger.

I was NOT disappointed. During the remainder of my training, these shoes helped me even more to transition into MORE of a midfoot/forefoot strike. I was able to run in my first marathon with these shoes and now swear by Newtons! I have since transition into a pair of Newton Gravity's, lighter and lower drop. Awesome!

My physical therapist suggested I try a pair of Newtons to aid in my recovery of a nagging achillies injury…they seem to have done the trick! I've run in Brooks for the last 15 years (not leaving them yet), but do really like the Newtons and the added "aid" they provide to support a minimalist running style.

Knee pain recently after 30 yrs of pain free running. Could not go much beyond 4 miles without pain and stiffness. Tried Pose Method and Chi Method. Sketcher Go-Run very uncomfortable and no cushion. Still had knee problems. Tried this Newton and found a much better shoe for mid/forefoot type gait. Ran 3 miles first time in shoe and no pain during or after! Has really good cushioning in forefoot. Would not be a shoe for traditional heal strike gait.

Watch the Mens Newton Running Sir Isaac Video!

Hi there, my name is Shawn and I?m your personal fit expert here at Road Runner Sports. I?m an avid marathoner and ultra distance runner and you can depend on me to tell you everything you need to know about the Men?s Newton Running Sir Isaac. Let?s take a closer look. You?ll be impressed by the styling of the Sir Issac, which is the most traditional of the Newton shoes but retains all of the benefits everyone is talking about. You?ll feel confident with these slip proof laces and the heel securing double eyelets and you?ll just love this highly breathable closed mesh. You?ll feel effortless with Action/Reaction technology in the mid-foot. These are actually small tubes that contract to absorb the shock of impact, and then spring open to propel you forward. You?ll appreciate the durability of the carbon rubber here on the outsole and you can rely on the Sir Isaac to accommodate most styles of orthotics. And that?s the Men?s Newton Running Sir Isaac. Remember, at Road Runner Sports, you get the ultimate test run, a 90 day wear ?em and love ?em guarantee. I?m Shawn, and I?ll see you on the road!

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